It looks like Destro is getting some PvE buffs tomorrow in the way of increased ember generation. Might this close the gap between it and Affliction/Demo enough to consider it heavily?

I doubt it will be viable in 10 man. There's still nothing it can really do better than Affli/Demo this tier. It seems alright on fights like Protectors and Tsulong HC but still not good enough. In 25-man on fights with cleave or a lot of adds that are not grouped it might be able to compete.